How does having an autoimmune disease put you more at risk for infection?

It can. Some autoimmune disorders, e.g., sle are associated with low while blood cell counts and can predispose to infections.

Related Questions

I have an autoimmune disease, am I more susceptible cytomegalovirus infections?

Maybe. It depends if you are medications to supress your immune system or not.
Likely Not. Only if you also have an immunodeficiency on top of the autoimmune disease. It might also depend on the type of autoimmune disease. Speak with your rheumatologist and consider seeing an immunologist.

If a doctor was testing for any and all autoimmune diseases, would they happen to discover HIV infection if it were present?

No. They would have to do an HIV antibody or viral load test to diagnose HIV infection which is an infectious not autoimmune disease.
No. The doctor would have to order specific testing for HIV and that requires informed consent.

Could I have an autoimmune disease, lymphoma, leukemia if I can't fight any vaginal infection&have 2 firm pea sized lumps (cervical node & under chin?

Not likely. This would not be a common way for autoimmunity or a hematologic malignancy to present. Recurrent vaginal infections in someone of your age - indeed any age- needs explanation.
Yes. Lymphadenopathy (swollen lymph nodes) has many causes like some of the things mentioned above. It is best to follow these with you doctor. If they don't get smaller with time and/or antibiotics, then the doctor may recommend a biopsy with either a needle or a surgery to further evaluate what is going on.

Can u name a few autoimmune diseases that can cause joint pain pos ANA fatigue and recurrent kidney infections?

Too many. Many autoimmune diseases can cause the symptoms you described except for kidney infection. However they can cause kidney damages. Lupus, Rheumatoid arthritis, MCTD. Just to name a few.

How can having an autoimmune disease put you more at risk for swine flu?

AI dz. The basic answer is that the immune system's optimum function is based on a balance of proinflammatory and antiinflammatory processes that, when in balance, are able to fight off disease optimally. When imbalanced such as in autoimmune disease, one is more susceptible to microbial illness.
Also. Being on immunosuppressive agents to treat an autoimmune disease put you at increased risk for infection.

Does having an autoimmune disease make you more susceptible to meningitis or encephalitis?

Somewhat. The biggest issue is more the medicines you take to control your autoimmune disease. They suppress your immune system to keep your body from attacking itself. However, it also prevents your immune system from attacking an invading infection and so in that way would make you more susceptible to these infections.